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Cheap flights from South Dakota to Idaho Falls from $369

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from South Dakota to Idaho Falls departing on 5/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from South Dakota to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:55 am - 3:23 pm
RAP
-
IDA
6h 28m
1 stop
United Airlines Logo
4:04 pm - 10:28 pm
IDA
-
RAP
6h 24m
1 stop
$434United Airlines
Tue, Aug 25 - Sat, Aug 29
United Airlines Logo
7:00 am - 1:24 pm
RAP
-
IDA
6h 24m
1 stop
United Airlines Logo
5:53 pm - 10:23 pm
IDA
-
RAP
4h 30m
1 stop
$464United Airlines
Tue, Aug 25 - Sat, Aug 29
United Airlines Logo
10:26 am - 3:23 pm
RAP
-
IDA
4h 57m
1 stop
United Airlines Logo
4:04 pm - 8:38 pm
IDA
-
RAP
4h 34m
1 stop
$504United Airlines
Tue, Aug 25 - Sat, Aug 29
United Airlines Logo
5:00 am - 9:50 am
RAP
-
IDA
4h 50m
1 stop
United Airlines Logo
2:30 pm - 7:13 pm
IDA
-
RAP
4h 43m
1 stop
$583United Airlines
Fri, Jun 5 - Tue, Jun 9
United Airlines Logo
5:00 am - 9:50 am
RAP
-
IDA
4h 50m
1 stop
United Airlines Logo
2:30 pm - 11:16 pm
IDA
-
RAP
32h 46m
2 stops
$609United Airlines
Fri, Jun 5 - Tue, Jun 9
United Airlines Logo
10:26 am - 3:23 pm
RAP
-
IDA
4h 57m
1 stop
United Airlines Logo
12:30 pm - 10:28 pm
IDA
-
RAP
9h 58m
2 stops
$903United Airlines
Tue, Aug 25 - Sat, Aug 29
United Airlines Logo
11:22 am - 3:23 pm
RAP
-
IDA
4h 01m
1 stop
United Airlines Logo
12:30 pm - 10:28 pm
IDA
-
RAP
9h 58m
2 stops
$926United Airlines
Tue, Aug 25 - Sat, Aug 29
Delta Logo
6:50 am - 6:14 pm
RAP
-
IDA
11h 24m
2 stops
Delta Logo
3:25 pm - 10:38 pm
IDA
-
RAP
7h 13m
2 stops
$1,738Delta
Fri, Jun 5 - Tue, Jun 9

United Airlines flights from South Dakota to Idaho Falls

Our best United Airlines deals on South Dakota to Idaho Falls flight tickets
United Airlines
Aug 25
RAP8:55 amRapid City
6h 28m
1 stop
IDA3:23 pmIdaho Falls Fanning Field
Aug 29
IDA4:04 pmIdaho Falls Fanning Field
6h 24m
1 stop
RAP10:28 pmRapid City
$434
United Airlines
Aug 25
RAP7:00 amRapid City
6h 24m
1 stop
IDA1:24 pmIdaho Falls Fanning Field
Aug 29
IDA5:53 pmIdaho Falls Fanning Field
4h 30m
1 stop
RAP10:23 pmRapid City
$464
United Airlines
Aug 25
RAP10:26 amRapid City
4h 57m
1 stop
IDA3:23 pmIdaho Falls Fanning Field
Aug 29
IDA4:04 pmIdaho Falls Fanning Field
4h 34m
1 stop
RAP8:38 pmRapid City
$504

momondo Fare Finder

 
Customize your flight search to find flights from South Dakota to Idaho Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 12, 2026.
Use the filters below to find and compare flights from South Dakota to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 8/25

8:55 am-3:23 pm

1 stop6h 28m

Idaho Falls Fanning Field

Sat 8/29

4:04 pm-10:28 pm

1 stop6h 24m

$434

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 8/25

7:00 am-1:24 pm

1 stop6h 24m

Idaho Falls Fanning Field

Sat 8/29

5:53 pm-10:23 pm

1 stop4h 30m

$464
Quickest round-trip

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 8/25

10:26 am-3:23 pm

1 stop4h 57m

Idaho Falls Fanning Field

Sat 8/29

4:04 pm-8:38 pm

1 stop4h 34m

$504

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 6/5

5:00 am-9:50 am

1 stop4h 50m

Idaho Falls Fanning Field

Tue 6/9

2:30 pm-7:13 pm

1 stop4h 43m

$583

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 6/5

5:00 am-9:50 am

1 stop4h 50m

Idaho Falls Fanning Field

Tue 6/9

2:30 pm-11:16 pm

2 stops32h 46m

$609

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 8/25

10:26 am-3:23 pm

1 stop4h 57m

Idaho Falls Fanning Field

Sat 8/29

12:30 pm-10:28 pm

2 stops9h 58m

$903

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 8/25

11:22 am-3:23 pm

1 stop4h 01m

Idaho Falls Fanning Field

Sat 8/29

12:30 pm-10:28 pm

2 stops9h 58m

$926

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 6/5

6:50 am-6:14 pm

2 stops11h 24m

Idaho Falls Fanning Field

Tue 6/9

3:25 pm-10:38 pm

2 stops7h 13m

$1,738
Cheapest one-way
Quickest one-way

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 5/18

5:20 am-9:55 am

1 stop4h 35m

$369

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 5/18

12:05 pm-1:25 pm

2 stops25h 20m

$774

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from South Dakota to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from South Dakota to Idaho Falls Fanning Field?

United Airlines is the most popular carrier operating from South Dakota to Idaho Falls Fanning Field

Cheap South Dakota to Idaho Falls flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from South Dakota to Idaho Falls

Fastest flight time

4h 50m

Direct flights

None
The fastest flight from South Dakota to Idaho Falls takes 4h 50m
There are no direct flights from South Dakota to Idaho Falls. There are no popular flight routes from South Dakota to Idaho Falls.
Search flight deals

Frequently asked questions about flying from South Dakota to Idaho Falls

  • When did momondo last update prices for flights from South Dakota to Idaho Falls Fanning Field Airport?

    Prices for flights from South Dakota to Idaho Falls Fanning Field Airport are updated daily.

  • How many operators does momondo search for flights from South Dakota to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from South Dakota to Idaho Falls Fanning Field Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from South Dakota to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The necessary travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from South Dakota to Idaho Falls

Compare and see reviews for airlines that fly from South Dakota to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $152Free CancellationRating
7.4
9,700 reviews
Search United Airlines flights

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

Why use momondo?

Why should I use momondo to find a flight deal from South Dakota to Idaho Falls?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from South Dakota to Idaho Falls for you.

Can I find flights from South Dakota to Idaho Falls with flexible booking policies on momondo?

Flights from South Dakota to Idaho Falls with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from South Dakota to Idaho Falls?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Idaho Falls from South Dakota.

I’m not ready to book a flight from South Dakota to Idaho Falls right now. Can momondo alert me if prices change?

Price alerts on flights to Idaho Falls from South Dakota are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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